ns for fx: test case for comparing fp32 vs fp32_prepared shadow (#61357)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61357
Adds a test case for comparing fp32 vs fp32_prepared in a shadow model.
Test Plan:
```
python test/test_quantization.py TestFXNumericSuiteCoreAPIs
```
Imported from OSS
Reviewed By: hx89
Differential Revision: D29600350
fbshipit-source-id: ff7518ce8a789ab7469cb22044f1d7c697e2cd04
